Clamping device



June 12, 1928. 1,673,454

I. HOCHSTEIN CLAMPING DEVICE Filed Feb. 8, 1927 INVENTOR ISADORE HOCHSTEI N A TTORNEY Patented June 12, 1928.

UNITED STATES rs'anonn Kocnscrnm, OF nnookrl nnnw YORK.

- 'cLaMPINe name. T

r Amman-on area Tebruary'8,'1!i27. Serial no. 166;761.

My .invention relates to safety devices, and more particularly to safety couplings or clamps by means of. which a tubing, such as a rubber tubing, maybe securely held in operative connection with a metallic or-oth'er tubingqsuch :as, for instance, the usual cook or connection torgas stoves or the like;

"Still more particularly my invention relates to a safety coupling" or clamp of this character, which may be caused to engage any usual gas supply-pipe with one end, and with the otherengage a rubber tubing, or other tubing, detachably. connected to the gas supply pipe and, to so grip the tubing cidentally detached from the tube or supply pipe to Which it'is connected.

Still further my safety clamp or coupling is provided with means arranged to engage a key or controlling element .embodredun the gas supply pipe, so that it will automaticallylock the key or controlling. element in closed position and thereby prevent the accidental and unintended opening or movement of the key or controlling element and so that the movement 101 opening of the key or contro'lling element lean take place only after and as the result of a deliberate and positive action by theoperator.

My clamp is soconstructed and -.com'bined that one clamping element engages the pipe or tubing to which a hose :is *to be attached and another clamp element engages and holds thereon a tubing to be attached thereto, yet these clamping elements are so connected by straps or bars that the entire clamp is a unit, o-f substantially one-piece construction. And further, my clamp beside providing an adjust-ability to each of the clamping elements isalso provided with a means bywhich a nkey or valve in the supply pipe may besecurely locked and held in locked position against :unintendecl movement in such :a manner that movement ort the key or valve can take place only after the unlocking thereof fromxmy locking element and only after-a positive operation'by theop'erator. i

By the provision of the means incorporated in my sa'letyclamp I am able to effect a junction of'a flexible gaspipe "with'a gas that the detachable tubing may not "be acfitting so that they may not he accidentally separated and so that in the event of the provision in said fitting of a hey or control valve that said key or control :valve may not he accidentally opened, but may be opel'a ted only :by the positive action of the operator :andnvill be automatically locket against such accidental opening when the key orcontrol valve is turned'toclosed position. q

-My invention consists oat-the particular combination, organization and arrangement of parts shown in the accompanying .dra'wings, described the specification, and more specifically defined in the appended claims. :One of the objects or my invention is, to pnovide a device oat "this character which will securely clamp a ihoseior fleiaible tube to a gas supply pipe or fitting/so that accis dental displacement of the hose or tuibe may not'abeefiectedg W i j m Another object is to provide a safety clamp of this character which maybe readily attached toia gassupply pipe or fitting and a hose or flexible tube carried thereon, or connected thereto so that the hose and pipe may befl' secu rely held togeth'e'r against accidental detachment, and so that the clamp may be readily detached therefrom when desireel. r

Another object :is to provide device'oi this character which will not only hold a hose or tube in attached relation to a gas supply pirpe but which, by means provided in my damping device will automatically lock azkey or control valve in closed position and which will necessitate a positive action on the iPtiDtiOh'fdill -QPlFLlI0lf to position the key or control valve so that a lioxv of gas mayv be rp'ermittedf through the supply pipe to the tube. a

'Anothrobjeetis-to provide a clamp having fayp'lurali'ty -ot' claniping elements connected by straps or other likemeans so that y r the clamping elements -"zi1'e.so"'joi11ecl thatthe entireclan ping device is a unit, the parts ot 'w liih are so related that the clamps'may not readi lyaccidentally *be unclamped from from the tube.

, moved therefrom.

by the deliberate detachmeint of the. clamping elements from the gas supply plpe or In the drawings:

Fig. 1 is a side elevation showing a section Of'fl gas supply pipe, ayhose cock attached thereto and asection of flexible tubing mounted on said hose cock nozzle--illustrating my clampingdevice mounted in op.-

erative relation to the'ga's supply pipe and hose, and illustrating the key locked an closed position.

Fig. 2 is a top planlyiew'ofthearrange.

which I.1have illustrated. the locking finger toobe attached. i i

Fig. (i'is' a vertical cross-sectional view takenaonline 6-f-6 of'Figa 1, showing the opposite;end of my. clamping element clamped around the connected flexible tube; and hold mgsaidtubeconnected to the nozzlegotithe ing said endstogether is formed. L

hose cock,,it being the end opposite that car. ryingthe looking spring finger: which was lllllStIfltdyln Fig; 4:. 1 1 1 "z the blankfrorn F'g; Tisaplan viewqof I which my Jum-tar-y, clamp 2 comprising the clamp ends a and the straps or bars connect- Referrlngto the drawings,.in whichllike numerals ofreference indicate corresponding parts, a gas supply pipe 10, which in this instance issuch as is generally'provided for gas distribution, has lconnected thereto a hose cock ll. 'The hose cock ll hasa, nozzleportion 12 and a head 13:01'1 itslopposite end for attachment of the hose cock to the gassupply pipe. The-.hose cook 11 is likewisqprovided with; the usual control valve orkey 14, for the purpose-of permitting or pre 'enting the flow of gas or other sub stance,tlhrough the supply .pipe. and hose cook. The valve or key 14 is provided'with,

:1 han dle or key head 15 of any usual pattern 1 by. meansof avhichthe-key'.14maybe operi atedand by meansof which,by a portion of y. device, the key may be held in locked or closed position, Attached-to the nozz1e112 of the hose-rock, ll is a tube 16 of any'usual kind, for instance' such as that whieh may be used to feed any ordinary typefofgas stovewith its gas supply. I 7: I r, atlone end My sat' ety cla np is provided with a clamping element 17 which is shown as clamped around the gas supply pipe and at its other end is provided with a clamping element 18 which is shown as clamped around the flexible tube 16. The clamping elements 17 and 18 'are held in fixed relation to each other by straps or I bars l9 and 20 which are preferably integral with the.clampingelements 17 and 18, and whichv iththe'se clamping elements forms a clamping device of unitary construction.

The clamping element 17 is a split ring provided. with outwardly bent tongue-like portions 21 and 22, while the clamping element 18 is alsoa split ringand is provided with"tonguc like-portions 23 and 24. The; tongue-like elements 21, 22, 23 and 24 are:

providedwith openings 25, 26, 27 and 28 adapted to receive bolts 29 and 30 by means of which the clamping elements 17 and 18 may be tightly and securely locked in clamping position around the gas supply pipe 10 and the flexible tube 16, and by means of which the clamping elements maybe adjusts ably held to the "as supply pipe andfiexible tube 'or may bcpermitted to be detached therefrom. It will he noticed from Fig. 1.

that the straps or connecting bars 19 and 20 are given asomewhat curved formation in order to. be out. of contact with the control valve or key 15. This, however, is an m bitrary feature ofdesign and I do not wish it to be understood as'a necessary part of my invention, for thebars 19 and 20 may be formed as showninFig. 3 and so placed around theperiphery of the clamping felements 17 and l8 as to be out of contact with? the valve portionof-the hose cock 11. A

feature of my invention, however, is that the clamping elements 17 .and .18 shall be joined by straps or bars that will hold them in fixed relation to each other, such as, for instance, the bars 19 and 20..

In order that the nuts 31 and 32 maybe conveniently held against rotation when the bolts 29 and 30 are turned, I provide on the tongues-22 and24 flanges 33 and 34, which will engage the edges of the nuts and hold them against any tendency to turn. By this means 1 may conveniently tighten or loosen the bolts by any sultable anstrument such as a screw-driver which will engage a slot provided .in thefbolt-hc'ad, ,as illustrated in Fig. 6.

It will besecn irom Fig. 1: that when- I have firmly clamped the clamp element '17 around the gas supply pipelO and'have firmly clamped the clamp element 18 around the connected tube 16 the flexible tube and supplyspipe will be securely held in fixed operative relation and the clampingelements 17 and 18 will be held securely in fixed rela'- tion to eachother andito the gas supply pipe 10 and the flexibletube 16. This relation of the clamping elementsiis maintained by the prevented connectingstraps or bars 19 and illust-rated in Fig. 3 and the whole device thereby from accidental displacement from the gas pipe 10 andthe flexible tube 16, and may not be detached therefrom er;- ceptby the positive action of an operator in removing the bolts 30 and 29. p

Itwill be observed that the clamping eleinent-l7 is substantially a solid bandsplit ring having the tongue elements 21 and 22, While the clamping element 18 is provided with a tongue portion formed from inwardly bent from the body portion of the clamping element 18. so formed that it spans the space between the tongue portions 23and 24 of the Cl-ELTDP- ing element 18 in such ainanner that when theiclz-imping element 18 is clamped upon the flexible tube 16, the clamping surta ce bearing upon the tube 1'6 will present acorn pletely circular area engaging the surface of the'tube throughout its entire circumterence and will thereby prevent any buckling or bulging that might otherwise permit a leakage as the results thereof.

I not only bymy device provide'mea'ns which will securely clamp a hose to asupply pipe and hold it 'zrgainst accidental displacement but in combination therewith I provide means which will also automatically look a control key against accidental opening but which will permit the ready opening of said control keyfiu'pon positive and intended action .of the operator.

The means provided to eltect this "automatic locking of the control key 15 I preterably attach to the clamping element 17. This means comprises a main tongue-like leaf spring '36 provided with a slot 37 the tongue-like portion having a laterally extending portion 38 at one end and a rearwardly and downwardly extending portion 39 s ngularly disposed to the laterally extending portion 38; the laterally extending portion 39 be-ing provided at its lower end with a downwardly and laterally extending portion 40 "of curved formation substantially corresponding in curvature to the formation of the outer periphery of that section of the clamping element 17 adjacent to tongue portion 21. The a'ngu'larly laterally extending portion 39 is provided with an opening 41 adapted to receive the "bolt 29 therein and to thereby permit "the mounting of the look ing means thereon in combination with "my clamping elements 'ln order. to hold the loohingmeans inoperative relation, I tight= en en the bolt29 -until the nut 31 firm-1y grips the :130i'lll011 39folf the locking means. i

The downwardly extending curved portion 40 will then rest -'and "be securely held upon and against the clamping element 17 and the upward or downward displacement of the locking means will thereby be prevented, and at the same time the leaf spring 36 This tongue 35 is thereof Rvillbe positioned that it Will extend trom the clamping element to the key head 15 and will engage the keyhead 15 in such a manner thatthe keyhead 15 will register in the slot inFigs. 1 and 2.

The locking means is preterablyana'de ofsp'ring anetal (01' other suitable material having the desired degree "of springy liexibili-ty. This is desirable in "order that the leaf spring 36 of the locking means may be slightly displaced when the hey head 15 13 to be or is being 'tUlllTGtllO close the'val've controlled thereby and so that as the turn inggacti'on otthe ltey'head 15 takes place the leaf-spring .willuearagainst the edge of the key head 15 and, when the hey is completely closed willautomaticallycause the Key head tobe engaged by-the slotted por} tion ot the leaf spring 56 and be gripped thereby andheld in loclred position, it is also desirablethat the leaf spring 36 be of springy flexibility in order that when it is desired to unlock the hey head 7'15 in order that it may be turned the operator may 37 as isillustrated readily vdisplace the leaf spring tron-1 contact with the key head 15 and thereby .permit the hey to -be turned, but vbecause of the spryingy -iiexibility of theleat' spring 36 it will when released from the control or the l;

operator return automatically to its original position ready to re-engage the key head- 15 when t s again turned intoicontact with theleatspringfiti M a i Altl-iough l have in Figs. 1, 2 and 4 shown a locking element mounted on the clamping element 17-; yet it is'to Lbe understood that I may as readily provide a lock ing means that may be mounted on the clamping eleln'ient 18, if desired,

ln order that the method of manufacture of my combined clamp and safety lockingdevice may be readily understood, it Willbe readily seenby reference to Fig. 7 that I may form the clamping elements and connecting strap pieces as a single unit by stamping them out of any suitable metal or i other-sheet material having the desiredcha acteristics in the formation shownin that figure, and by then completing ithe inanutactu-ring by bending or otherwise suitably fashioning the clamp device from this blank into the patternillus'trated in Fig. 3. The

pipe and' cohnected tothem a fterthe clain'p ing elements have been'put in place, by insertin'gthe bolts 29 and 30 through-theopenthe tormation illustrated in ice in'gs in the tongues 21, 22, 23 and 24, by mounting the locking elementcarrying, the leaf spring 36 upon one or the other of these bolts and by then tightening the clamp in .place bythe operation of tightening the bolts 29 and 30, so that theiclampsthenhse curely and i tightly engage the i gas supply pipelO. and flexible tube 16 attached thereto and sso'that the slotted leaf spring 36-ofrtl1e lockingwelement is held in the desired posi, tion to grip 'and securely lock orto tliemnlocking of the key head 15.

' .It is believed that by the provision of this clampingand lockingdevice I havedevised a means by which the accidentalidisengageincnt otaflexible tub from the gas supply pipe maybe positively prevented, and ina combination therewith also provided means by which the control valvecarried in a gas supply pipe or extension thereof may "b'e'se-- curely locked against'acci'dental openingand may yet at th sametimebereadily opened by anintended positive aetionof an operator. ,By theselmeans it is believed I have provided a device of" extremely simple con-. struction of cheap manufacturing cost and of great utility for the purpose for which it invention in greatdetail, yet I do not 'wish to be limited thereby, except as the state of the art, and the} appendedcl'aims may require, for it is obvious that "various modifications and changes may be made therein without depart ng from the spirit and scope What I claim as new, and desire to secureby Letters Patent is: 1 I

i 1. In a 'clzm'lpingdevice, the combination of afplurality of clamping members', meansintegralwvith' said clamping members, and

holding said-members in fixed spaced relation'i to" each other, means to adjustably-and detachablyclamp said members to members detachable from each otherto' holdf said de-- tachable" members in fixed relatiom'a 'valve in" one of said detachable? members and means carried on one of said clamping members to, lock said valve in zclosediposition.

2. In a elamping device, theflcombination of a pluralityof clampingmemb'ers, means integral with, said clamping members and holding said members in fixed spaced rela-i tion to' .each other, means to adjustably and permit i tlon to each, other, means to ad ustabl and detachably clamp said members to members detachablykclamp said members tomembers detachable from each other to hold saiddctachableimembers in fixed relation, a valve intoneof ,said. detachable members and means vcarried on one of said clamping mem. bers to. automatically lock said I valve n closed position.

3; In a clamping device, the combination of aplurahtyoi clamping members, means i integral with said clamping,members, and

holdingsaid members in fixed spaced reladetachablc from each other to hold said detachablemembers in lixcd relation, a valve 1n vone of said detachable members and.

spring means carried on one of said clamping tmembers to, aliton'iatlcally lock said valve :111 closed position and adapted topermit said valve t0 be unlocked and operated to open position.

4. In xa clamping device, the combination of a plurality ofclamping members, means integralwith said iclamping members, andholding saidmembers in fixedispaced role-1.

tion to eachother, a tongue inwardly bent from and integral. with one of said clamp ing.;membe1's, means toadjustably and detachably clamp said members to members detachable from each otherto hold said de-v tachable members in'fixcd/ relation. a valve' in oneof said detachable members and spring means carried onone of said clamping members but separable therefrom to antomatically lock said valve in closed position andiadapted to permit said valve to be unlocked and operated to openposition by the operation of said spring means.

,5; In a clamping device, the combination of a plurality of split ring clamping elements, a bar integral with each of said clamping elements and holding saidela ments in fixed spaced relation, bolts engag-= ing tongue portions of said clamping elements adapted to receive said bolts to hold said clamping elements in clamping posi tron 'upon separa'bly connected membcrs,ito

hold said members together in connected relation, a spring tongue detachably mounted on one of said clamping elements, a slot in said tongue adapted to engage ajvalve in one of said separable membersto lock said ValveautomaticaHy :in closed position and" adapted tobe operated to permitsaid valve to be turned to open POSltlOIL: 4 1

having thereon anozzle robe engaged-by the end of said tube," 'the combination of a; clamping member, encompassing "Silld end,

a meanscfor tightening said member, thereby,tightening said end on to. saidznozzle,

another clampin'gimember encompassing a part at, said fitting, a, leafspring connected to one of sa d clampingimembers, amov- 6. In a safety devieelfor theunction Df fl, flexible tube to a. gas fitting, said fitting llU lid

able part on said fitting and an opening in said spring for interlocking With said movable part when said fitting is closed.

7. In a safety device for the junction of a flexible tube to a gas fitting, said fitting having thereon a nozzle to be engaged by the end of said tube, the combination of aolai-nping member encompassing said end, a

10 tightening said end on to said nozzle, an-

other clamping member encompassing a part at said fitting, avalve in said fitting and a'slotted member carried on one of said clamping members for interlocking with said valve in closed position.

Signed at the city of New York, in the county of New York and State of New York, this 3rd dayot February, A. D. 1927. means for tightening said member, thereby ISADORE HOCHSTEIN. 

